Model: 31810

Self-drilling Screw

Properties:

Thread Direction

Right-hand

Fastener Length

0.500 inches

Head Style

Hexagon extended washer

Width Between Flats

0.312 inches

End Application

F-15sa

Thready Qty Per Inch (tpi)

Nonmachine Thread Style

Wide flute (type h or bt)

Nonmachine Thread Diameter

0.190 inches

Part Name Assigned By Controlling Agency

Unslotted hex washer hd self drilling screw

Material

Steel

Surface Treatment

Zinc

NSN

5305-01-646-0438

Part Number

31810

Description

Screw,self-drilling

CAGE

0Y3H3

A hardened, externally-threaded fastener with a self-drilling point. It drills, taps and fastens and may have a machine screw thread or a nonmachine screw thread. The threads usually extend from behind the pilot to the bearing surface of the head.

Part 31810 NSN 5305-01-646-0438

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

38031

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment